Tony Podesta stepped down from the lobbying firm he has run for three decades Monday after Mueller charged former Trump campaign chairman Paul Manafort and his top deputy, Richard Gates, with crimes related to his work for a pro-Russia political party in Ukraine.

The indictment described Manafort’s efforts to hide his lobbying on behalf of the Party of Regions.

One of the companies Manafort is accused of enlisting to help with the effort is reportedly Podesta Group, which did work for the group European Centre for a Modern Ukraine.

Trump suggested Podesta's decision to leave the firm fulfilled his campaign promise to "drain the swamp" in Washington.

But some Trump allies worry there may be serious repercussions from Monday's indictments.

Legal experts believe Mueller could use the charges to extract information from Manafort and Gates about whether there was any collusion between the Trump campaign and Moscow during last year's election.

There are also indications George Papadopoulos, another Trump campaign adviser who pleaded guilty to making false statements to the FBI about his Russia contacts, is cooperating with Mueller's probe.